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The objective of this study was to understand the attitudes of professionals who work in mental health regarding the use of conversational user interfaces, or chatbots, to support people’s mental health and wellbeing. This study involves an online survey to measure the awareness and attitudes of mental healthcare professionals and experts. The findings from this survey show that more than half of the participants in the survey agreed that there are benefits associated with mental healthcare chatbots (65%, p < 0.01). The perceived importance of chatbots was also relatively high (74%, p < 0.01), with more than three-quarters (79%, p < 0.01) of respondents agreeing that mental healthcare chatbots could help their clients better manage their own health, yet chatbots are overwhelmingly perceived as not adequately understanding or displaying human emotion (86%, p < 0.01). Even though the level of personal experience with chatbots among professionals and experts in mental health has been quite low, this study shows that where they have been used, the experience has been mostly satisfactory. This study has found that as years of experience increased, there was a corresponding increase in the belief that healthcare chatbots could help clients better manage their own mental health., Godkänd;2022;Nivå 0;2022-02-04 (johcin)

The objective of this study was to understand the attitudes of professionals who work in mental health regarding the use of conversational user interfaces, or chatbots, to support people’s mental health and wellbeing. This study involves an online survey to measure the awareness and attitudes of mental healthcare professionals and experts. The findings from this survey show that more than half of the participants in the survey agreed that there are benefits associated with mental healthcare chatbots (65%, p < 0.01). The perceived importance of chatbots was also relatively high (74%, p < 0.01), with more than three-quarters (79%, p < 0.01) of respondents agreeing that mental healthcare chatbots could help their clients better manage their own health, yet chatbots are overwhelmingly perceived as not adequately understanding or displaying human emotion (86%, p < 0.01). Even though the level of personal experience with chatbots among professionals and experts in mental health has been quite low, this study shows that where they have been used, the experience has been mostly satisfactory. This study has found that as years of experience increased, there was a corresponding increase in the belief that healthcare chatbots could help clients better manage their own mental health., Godkänd;2022;Nivå 0;2022-02-04 (johcin)

A factsheet and infographic that can assist extension faculty and staff in understanding and implementing programs for urban minority youth.

Tips to implement civic engagement programs for urban youth

Many industries are now investing heavily in data science and automation to replace manual tasks and/or to help with decision making, especially in the realm of leveraging computer vision to automate many monitoring, inspection, and surveillance tasks. This has resulted in the emergence of the 'data scientist' who is conversant in statistical thinking, machine learning (ML), computer vision, and computer programming. However, as ML becomes more accessible to the general public and more aspects of ML become automated, applications leveraging computer vision are increasingly being created by non-experts with less opportunity for regulatory oversight. This points to the overall need for more educated responsibility for these lay-users of usable ML tools in order to mitigate potentially unethical ramifications. In this paper, we undertake a SWOT analysis to study the strengths, weaknesses, opportunities, and threats of building usable ML tools for mass adoption for important areas leveraging ML such as computer vision. The paper proposes a set of data science literacy criteria for educating and supporting lay-users in the responsible development and deployment of ML applications., Comment: 4 pages

The study aimed to identify the determinants of the technical efficiency of Smallholder Tea Farmers (STFs) under UTZ certification system in Sri Lanka by employing stochastic production frontier using a sample survey of 75 STFs supported by the UTZ programme conducted between January and March in 2016. The results showed that a small number of STFs (11.8 percent) were over 90 percent efficient and the level of efficiency was found to be negatively related to coefficients of UTZ certified STFs and positively related to number of years with the same plants. The results further showed the labor and fertilizer were the significant factors that determine the tea production of STFs.

The study aimed to identify the determinants of the technical efficiency of Smallholder Tea Farmers (STFs) under UTZ certification system in Sri Lanka by employing stochastic production frontier using a sample survey of 75 STFs supported by the UTZ programme conducted between January and March in 2016. The results showed that a small number of STFs (11.8 percent) were over 90 percent efficient and the level of efficiency was found to be negatively related to coefficients of UTZ certified STFs and positively related to number of years with the same plants. The results further showed the labor and fertilizer were the significant factors that determine the tea production of STFs.

The study aimed to identify the determinants of the technical efficiency of Smallholder Tea Farmers (STFs) under UTZ certification system in Sri Lanka by employing stochastic production frontier using a sample survey of 75 STFs supported by the UTZ programme conducted between January and March in 2016. The results showed that a small number of STFs (11.8 percent) were over 90 percent efficient and the level of efficiency was found to be negatively related to coefficients of UTZ certified STFs and positively related to number of years with the same plants. The results further showed the labor and fertilizer were the significant factors that determine the tea production of STFs.

The study aimed to identify the determinants of the technical efficiency of Smallholder Tea Farmers (STFs) under UTZ certification system in Sri Lanka by employing stochastic production frontier using a sample survey of 75 STFs supported by the UTZ programme conducted between January and March in 2016. The results showed that a small number of STFs (11.8 percent) were over 90 percent efficient and the level of efficiency was found to be negatively related to coefficients of UTZ certified STFs and positively related to number of years with the same plants. The results further showed the labor and fertilizer were the significant factors that determine the tea production of STFs.

Macrocycles are of increasing interest as chemical probes and drugs for intractable targets like protein-protein interactions, but the determinants of their cell permeability and oral absorption are poorly understood. To enable rational design of cell-permeable macrocycles, we generated an extensive data set under consistent experimental conditions for more than 200 nonpeptidic, de novo-designed macrocycles from the Broad Institute's diversity-oriented screening collection. This revealed how specific functional groups, substituents and molecular properties impact cell permeability. Analysis of energy-minimized structures for stereo- and regioisomeric sets provided fundamental insight into how dynamic, intramolecular interactions in the 3D conformations of macrocycles may be linked to physicochemical properties and permeability. Combined use of quantitative structure-permeability modeling and the procedure for conformational analysis now, for the first time, provides chemists with a rational approach to design cell-permeable non-peptidic macrocycles with potential for oral absorption., Delat förstaförfattarskap: Bjorn Over, Pär Matsson(Shared first authorship: Bjorn Over, Pär Matsson)

Macrocycles are of increasing interest as chemical probes and drugs for intractable targets like protein-protein interactions, but the determinants of their cell permeability and oral absorption are poorly understood. To enable rational design of cell-permeable macrocycles, we generated an extensive data set under consistent experimental conditions for more than 200 nonpeptidic, de novo-designed macrocycles from the Broad Institute's diversity-oriented screening collection. This revealed how specific functional groups, substituents and molecular properties impact cell permeability. Analysis of energy-minimized structures for stereo- and regioisomeric sets provided fundamental insight into how dynamic, intramolecular interactions in the 3D conformations of macrocycles may be linked to physicochemical properties and permeability. Combined use of quantitative structure-permeability modeling and the procedure for conformational analysis now, for the first time, provides chemists with a rational approach to design cell-permeable non-peptidic macrocycles with potential for oral absorption., Delat förstaförfattarskap: Bjorn Over, Pär Matsson(Shared first authorship: Bjorn Over, Pär Matsson)Ytterligare forskningsfinansiär: NIGMS-Center of Excellence in Chemical Methodology and Library Development (Broad Institute CMLD), Grant Number: P50 GM069721

Profiling of eight stereoisomeric T. cruzi growth inhibitors revealed vastly different in vitro properties such as solubility, lipophilicity, pK(a), and cell permeability for two sets of four stereoisomers. Using computational chemistry and NMR spectroscopy, we identified the formation of an intramolecular NH -> NR3 hydrogen bond in the set of stereoisomers displaying lower solubility, higher lipophilicity, and higher cell permeability. The intramolecular hydrogen bond resulted in a significant pKa difference that accounts for the other structure property relationships. Application of this knowledge could be of particular value to maintain the delicate balance of size, solubility, and lipophilicity required for cell penetration and oral administration for chemical probes or therapeutics with properties at, or beyond, Lipinski's rule of 5.

This paper examines the evidence for stability in the income-velocity of money by allowing for the effects of the housing and stock markets. It is shown that much of the hitherto unexplained behavior of the income velocity (the so-called "velocity puzzle") can be explained by housing transactions as well as the returns on housing. Stock market transactions and wealthy effects of changes in stock prices are also shown to have a statistically significant effect on the income-velocity of money.

This paper examines the evidence for stability in the income-velocity of money by allowing for the effects of the housing and stock markets. It is shown that much of the hitherto unexplained behavior of the income velocity (the so-called "velocity puzzle") can be explained by housing transactions as well as the returns on housing. Stock market transactions and wealthy effects of changes in stock prices are also shown to have a statistically significant effect on the income-velocity of money.

The entry into higher mathematics begins with calculus. Rarely, however, does the calculus student recognize the full power and applications for the mathematical concepts and tools that are taught. Frank R. Giordano, Maurice D. Weir, and William P. Fox produced A First Course in Mathematical Modeling a unique text designed to address this shortcoming and teach the student how to identify, formulate, and interpret the real world in mathematical terms. Mathematical modeling is the application of mathematics to explain or predict real world behavior. Often real world data are collected and used to veriiy or validate (and sometimes formulate) a hypothetical model or scenario. Inevitably, in such situations, it is desirable and necessary to have computational support available to analyze the large amounts of data. Certainly this eliminates the tedious and inefficient hand calculations necessary to validate and apply the model (assuming the calculations can even be reasonably done by hand). The primary purpose of Mathematical Modeling Using Microsoft Excel is to provide instructions and examples for using the spreadsheet program Microsoft Excel to support a wide range of mathematical modeling applications. Microsoft Excel is a powerful spreadsheet program which allows the user to organize numerical data into an easy to follow on-screen grid of columns and rows. Our version of Excel is based on Microsoft Windows. In this text, it is not the intent to teach mathematical modeling, but rather to provide computer support for most of the modeling topics covered in A First Course in Mathematical Modeling. The examples given here are support that text as well, http://archive.org/details/mathematicalmode1094526053, Captain, United States Army, Approved for public release; distribution is unlimited.

Performance prediction or forecasting sporting outcomes involves a great deal of insight into the particular area one is dealing with, and a considerable amount of intuition about the factors that bear on such outcomes and performances. The mathematical Theory of Evidence offers representation formalisms which grant experts a high degree of freedom when expressing their subjective beliefs in the context of decision-making situations like performance prediction. Furthermore, this reasoning framework incorporates a powerful mechanism to systematically pool the decisions made by individual subject matter experts. The idea behind such a combination of knowledge is to improve the competence (quality) of the overall decision-making process. This paper reports on a performance prediction experiment carried out during the European Football Championship in 1996. Relying on the knowledge of four predictors, Evidence Theory was used to forecast the final scores of all 31 matches. The results of this empirical study are very encouraging., Comment: Appears in Proceedings of the Thirteenth Conference on Uncertainty in Artificial Intelligence (UAI1997)

Mathematical modeling forms a bridge between the study of mathematics and the application of mathematics with the intent of explaining or predicting real world behavior. In their book A First Course in Mathematical Modeling, Frank R. Giordano, Maurice D. Weir, and William P. Fox provide an introduction to the entire modeling process. Model verification, an important step(in the modeling process, often requires the analysis of vast amounts of data, making computational support essential. Mathematical Modeling Using MA MATLAB acts as a companion resource to A First Course in Mathematical Modeling with the goal of guiding the reader to a fuller understanding of the modeling process through the employment of MATLAB's powerful computational capabilities. In it, the reader is led through a series of examples, each building upon the previous, which apply MATLAB's computational power to various modeling scenarios. While not intended as a text in modeling, Mathematical Modeling Using MA TIAB is a useful resource for the novice modeler interested in tackling problems too large to be performed manually, http://archive.org/details/mathematicalmode109458655, Captain, United States Army, Approved for public release; distribution is unlimited.

Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2008., Includes bibliographical references (p. 79-87)., This thesis explores how operations research methods can be applied in the emergency response community by looking at two recent tropical storm disasters; tropical cyclone Yemyin in Pakistan, June 2007 and super typhoon Durian in the Philippines, Nov 2006. The case studies are used to highlight three common problem areas; determining the scope of the disaster, agency coordination, and relief logistics. The thesis identifies some operational models and applicable research and suggests that these ideas should be formulated as emergency management decision making tools particularly for use in the developing world., by Maurice D. Murphy., S.M.

Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2008., Includes bibliographical references (p. 79-87)., This thesis explores how operations research methods can be applied in the emergency response community by looking at two recent tropical storm disasters; tropical cyclone Yemyin in Pakistan, June 2007 and super typhoon Durian in the Philippines, Nov 2006. The case studies are used to highlight three common problem areas; determining the scope of the disaster, agency coordination, and relief logistics. The thesis identifies some operational models and applicable research and suggests that these ideas should be formulated as emergency management decision making tools particularly for use in the developing world., by Maurice D. Murphy., S.M.

Thesis (S.M.)--Massachusetts Institute of Technology, Sloan School of Management, Operations Research Center, 2008., Includes bibliographical references (p. 79-87)., This thesis explores how operations research methods can be applied in the emergency response community by looking at two recent tropical storm disasters; tropical cyclone Yemyin in Pakistan, June 2007 and super typhoon Durian in the Philippines, Nov 2006. The case studies are used to highlight three common problem areas; determining the scope of the disaster, agency coordination, and relief logistics. The thesis identifies some operational models and applicable research and suggests that these ideas should be formulated as emergency management decision making tools particularly for use in the developing world., by Maurice D. Murphy., S.M.

At early stages of tumorigenesis, the transforming growth factor-beta (TGF-beta) signaling pathway is thought to have tumor suppressor activity as a result of its ability to arrest the growth of epithelial cells. Smad4 plays a pivotal role in the TGF-beta signaling pathway and has been identified as a tumor suppressor, being mutated or deleted in approximately 50% of pancreatic carcinomas and 15% of colorectal cancers. A nonsense mutation generating a C-terminal truncation of 38 amino acids in the Smad4 protein has been identified in a pancreatic adenocarcinoma (Hahn, S. A., Schutte, M., Hoque, A. T., Moskaluk, C. A., da Costa, L. T., Rozenblum, E., Weinstein, C. L., Fischer, A., Yeo, C. J., Hruban, R. H., and Kern, S. E. (1996) Science 271, 350-353), and here we investigate the functional consequences of this mutation. We demonstrate that the C-terminal truncation prevents Smad4 homomeric complex formation and heteromeric complex formation with activated Smad2. Furthermore, the mutant protein is unable to be recruited to DNA by transcription factors and hence cannot form transcriptionally active DNA-binding complexes. These observations are supported by molecular modeling, which indicates that the truncation removes residues critical for homomeric and heteromeric Smad complex formation. We go on to show that the mutant Smad4 is highly unstable compared with wild type Smad4 and is rapidly degraded through the ubiquitin-proteasome pathway. Consistent with this, we demonstrate that the pancreatic adenocarcinoma harboring this mutated allele, in conjunction with loss of the other allele, expresses no Smad4 protein. Thus we conclude that these tumors completely lack Smad4 activity.

The Unmanned Ground Vehicle/System Joint Project Office is currently developing a family of untanned ground systems that may have the potential to give the ground combat commander the ability to gain a decisive advantage in the battle for information dominance. By harnessing the power of robotics in a reconnaissance, surveillance and target acquisition role, the UGV is designed to provide the maneuver battalion commander with the ability to extend his influence beyond the capabilities of traditional scouts. This thesis examined the Unmanned Ground Vehicle Medium (UGVM) using the Joint Conflict and Tactical Simulation (JCATS) model to evaluate the impact of changes to performance characteristics of the system. The scenario used for the simulation was based on Exercise KERNEL BLITZ (KB), a biennial joint amphibious operation conducted on the West Coast of the United States. The UGVM's communication limitations and speed were varied in the JCATS simulations. Measures of effectiveness (MOEs) for these changes included total blue detections, blue detections over time, total blue kills, and blue losses over time.

The U.S. Navy Telesonar RDT&E effort is developing a low cost, non-coherent acoustic modem capable of data transmission under adverse channel conditions at data rates up to 2400 bits per second (bps). This modem was described at Oceans 97 in Halifax. During the past year a substantial number of modems were constructed by Datasonics, Inc., including some intended for deployment in the SEAWEB 98 series of acoustic experiments. These experiments will occur in September, 1998 in Buzzards Bay, Massachusetts, in the USA. The purpose is to demonstrate an acoustic network capability supporting approximately 10 modems deployed in very shallow water. The network consists of two groups of modems, each using frequency partitioning of the approximately 5 kHz of available bandwidth, to communicate independently with a master modem. The master modem then acoustically communicates with a gateway containing both cellular and RF communications capabilities to reach distant users. Communications amongst the modems involves message transfer ("hop") across several modems, thus requiring careful attention to the development and implementation of network protocols. This is the first in a planned series of network experiments involving increasingly sophisticated modems and protocols, with autonomous handshaking and adaptive modulation offering both much lower and much higher data rates than are now available., Prepared in collaboration with Datasonics Inc., Cataumet, MA and Delphi Communications Systems Inc., Burlington, MA. Pub. in Proceedings of IEEE OCEANS '98 Conference, v2 p634-638, Sep 98.

Mathematical modeling forms a bridge between the study of mathematics and the application of mathematics with the intent of explaining or predicting real world behavior. In their book A First Course in Mathematical Modeling, Frank R. Giordano, Maurice D. Weir, and William P. Fox provide an introduction to the entire modeling process. Model verification, an important step(in the modeling process, often requires the analysis of vast amounts of data, making computational support essential. Mathematical Modeling Using MA MATLAB acts as a companion resource to A First Course in Mathematical Modeling with the goal of guiding the reader to a fuller understanding of the modeling process through the employment of MATLAB's powerful computational capabilities. In it, the reader is led through a series of examples, each building upon the previous, which apply MATLAB's computational power to various modeling scenarios. While not intended as a text in modeling, Mathematical Modeling Using MA TIAB is a useful resource for the novice modeler interested in tackling problems too large to be performed manually

The entry into higher mathematics begins with calculus. Rarely, however, does the calculus student recognize the full power and applications for the mathematical concepts and tools that are taught. Frank R. Giordano, Maurice D. Weir, and William P. Fox produced A First Course in Mathematical Modeling a unique text designed to address this shortcoming and teach the student how to identify, formulate, and interpret the real world in mathematical terms. Mathematical modeling is the application of mathematics to explain or predict real world behavior. Often real world data are collected and used to veriiy or validate (and sometimes formulate) a hypothetical model or scenario. Inevitably, in such situations, it is desirable and necessary to have computational support available to analyze the large amounts of data. Certainly this eliminates the tedious and inefficient hand calculations necessary to validate and apply the model (assuming the calculations can even be reasonably done by hand). The primary purpose of Mathematical Modeling Using Microsoft Excel is to provide instructions and examples for using the spreadsheet program Microsoft Excel to support a wide range of mathematical modeling applications. Microsoft Excel is a powerful spreadsheet program which allows the user to organize numerical data into an easy to follow on-screen grid of columns and rows. Our version of Excel is based on Microsoft Windows. In this text, it is not the intent to teach mathematical modeling, but rather to provide computer support for most of the modeling topics covered in A First Course in Mathematical Modeling. The examples given here are support that text as well

The area of higher mathematics begins with successive courses in calculus; however, rarely does the calculus student recognize the applications or impetus for the mathematical skills that are taught. Giordano and Weir produced A First Course in Mathematical Modeling, the first text which addressed this shortcoming in the curriculum of every science and engineering field. With the advent of powerful classroom computers, Fox, Maddox, Giordano and Weir produced Mathematical Modeling With Minitab, which assists the student in translating the theory into a computer language. At the Naval Postgraduate School, Maple is the software used most commonly in the Mathematics Department, requiring a similar instructing tool. Mathematical Modeling Using Maple follows the lead of Mathematical Modeling With Minitab, and assists the student in grasping the concepts of the modeling class without getting slowed down by the syntax of Maple.

The Javelin antitank weapon system will replace the Dragon m Infantry and Combat Engineer battalions on a one for one basis. The tactics and techniques for Javelin employment will closely mirror those used for Dragon and TOW missile systems. This thesis examines the effectiveness of Javelin versus Dragon and examines a different employment method. The thesis goals are: • To investigate the suitability of Janus(A) to model the employment of various weapon systems. • To compare Javelin against Dragon, using measures of effectiveness and performance outlined in the Test and Evaluation Plan (TEP). • To examine how changes in the composition and tactical employment of anti-armor weapon systems influence their lethality and survivability, potentially suggesting a more effective employment method. The data generated from the simulated force-on-force scenarios is analyzed using graphical, statistical, and mathematical modeling techniques. The results could benefit the Army's Training and Doctrine Command in their combat development and combat effectiveness analysis.

Visualization is key in helping a student understand the fundamentals of Calculus. The new generation of computer literate students, raised in a video-based environment, will expect more than the traditional chalkboard methods in assisting them in this visualization. By integrating computers into the classroom and developing software to assist in mathematics instruction, we can enhance student comprehension of, and ability to apply, mathematics in solving real world problems of interest to the military. As evidenced by the success of both the Apple Macintosh and Windows software, mouse driven, graphical user interfaces (GUI's) represent a powerful and frequently-used tool in the computing environment. GUI's improve the visual capabilities in computing software, simplify program execution, and reduce the time required to become proficient with the software. When designed correctly, the GUI-based software can significantly improve the way in which people interact with computers. This thesis lays the framework and develops multi-platform GUI software modules needed for the instruction of Calculus

The Janus combat simulation offers the user a wide variety of weather effects options to employ during the execution of any simulation run, which can directly influence detection of opposing forces. Realistic weather effects are required if the simulation is to accurately reproduce "real world" results. This thesis examines the mathematics of the Janus Weather Effects Models. A weather effect option in Janus is the Sky-to-Ground Brightness Ratio (SGR). SGR affects an optical sensors ability to detect targets. It is a measure of the sun angle in relation to the horizon. A review of the derivation of SGR is performed and an analysis of SGR's affect on the number of optical detections and detection ranges is performed using an unmanned aerial vehicle (UA V) search scenario. For comparison, the UAVs are equipped with a combination of optical and thermal sensors.

In this paper, we use simulations and some theory to show that many of the standard techniques used to estimate band-to-band misregistrations in multivariate imagery are biased. These biases, although typically small, become important because they are much larger than the standard errors of the estimators obtained for most image pairs, which often consist of sample sizes of the order of 105 or 106. We develop an empirical method for effectively correcting the biases in some of the methods. Typically, this enables us to estimate misregistrations to within about 1/100th of a pixel., This article is from 'Computing Science and Statistics: Proceedings of the Symposium on Interface Critical Applications of Scientific Computing (23rd): Biology, Engineering, Medicine, Speech Held in Seattle, Washington on 21-24 April 1991,' AD-A252 938, p587-592.

This thesis describes, extends and explores the validity of Hatzopoulos Naval Combat Model of modern surface warship missile engagements. An extensive sensitivity analysis is conducted to determine how the model's output is affected by changes in force alertness and scouting effectiveness. The approach taken is to analyze the sensitivity of combat (missile exchange) results first through the use of ratios, and second by examining partial derivatives. Two ratios are developed. The first is a ratio of remaining staying power after the exchange of salvos. The second is a fractional exchange ratio, which compares the fraction of combat power remaining on the two sides after an exchange. The robustness of the fractional exchange ratio as an indicator of success in naval salvo warfare was demonstrated.

The intermolecular and interfibrillar spacings of collagen in bovine corneal stroma have been measured as a function of tissue hydration. Data were recorded from low- and high-angle x-ray diffraction patterns obtained using a high intensity synchrotron source. The most frequently occurring interfibrillar spacing varied from 34 nm in dry corneas to 76 nm at H = 5 (the hydration, H, is defined as the ratio of the weight of water to the dry weight). The most frequently occurring intermolecular Bragg spacing increased from 1.15 nm (dry) to approximately 1.60 nm at normal hydration (H almost-equal-to 3.2) and continued to increase only slowly above normal hydration. Most of the increase in the intermolecular spacing occurred between H = 0 and H = 1. Over this hydration range the interfibrillar and intermolecular spacings moved in tandem, which suggests that the initial water goes equally within and between the fibrils. Above H = 1 water goes preferentially between the fibrils. The results suggest that, even at normal hydration, water does not fill the interfibrillar space uniformly, and a proportion is located in another space or compartment. In dried-then-rehydrated corneas, a larger proportion ot the water goes into this other compartment. In both cases, it is possible to postulate a second set or population of fibrils that are more widely and irregularly separated and therefore do not contribute significantly to the diffraction pattern.

The study of fractal geometry and chaotic dynamical systems has received considerable attention in the past decade. Motivated by the interesting computer graphics produced by these fields, mathematicians have attempted to formalize the theoretical structure of the results, physicists have attempted to apply the theory to the real world phenomena, and laymen have enjoyed much of the popular literature and television programs that the field has fostered. Unfortunately, the mathematics associated with these subjects has made them inaccessible to most undergraduates, even if they have a strong back ground in mathematics. This thesis presents the basic ideas of fractal geometry and chaotic dynamical systems in a setting that can by understood by undergraduate students who have has a course in advanced calculus. We hope it will allow them to gain an appreciation of the fields and motivate them to pursue further study.

The intermolecular and interfibrillar spacings of collagen in bovine corneal stroma have been measured as a function of tissue hydration. Data were recorded from low- and high-angle x-ray diffraction patterns obtained using a high intensity synchrotron source. The most frequently occurring interfibrillar spacing varied from 34 nm in dry corneas to 76 nm at H = 5 (the hydration, H, is defined as the ratio of the weight of water to the dry weight). The most frequently occurring intermolecular Bragg spacing increased from 1.15 nm (dry) to approximately 1.60 nm at normal hydration (H almost-equal-to 3.2) and continued to increase only slowly above normal hydration. Most of the increase in the intermolecular spacing occurred between H = 0 and H = 1. Over this hydration range the interfibrillar and intermolecular spacings moved in tandem, which suggests that the initial water goes equally within and between the fibrils. Above H = 1 water goes preferentially between the fibrils. The results suggest that, even at normal hydration, water does not fill the interfibrillar space uniformly, and a proportion is located in another space or compartment. In dried-then-rehydrated corneas, a larger proportion ot the water goes into this other compartment. In both cases, it is possible to postulate a second set or population of fibrils that are more widely and irregularly separated and therefore do not contribute significantly to the diffraction pattern.

This report develops a modern naval combat model. It deals with naval surface missile combat and models the attrition as a force-on-force process described in discrete time steps, or slaves. The degradation of each force is expressed in terms of remaining staying power and combat power in both opponents. It is based on Lt. Beall's model, but since it deals with missile warfare it incorporates several human factors that affect the outcome of a naval battle: specifically scouting effectiveness, leadership, morale, and training.

This report develops a modern naval combat model. It deals with naval surface missile combat and models the attrition as a force-on-force process described in discrete time steps, or slaves. The degradation of each force is expressed in terms of remaining staying power and combat power in both opponents. It is based on Lt. Beall's model, but since it deals with missile warfare it incorporates several human factors that affect the outcome of a naval battle: specifically scouting effectiveness, leadership, morale, and training., http://archive.org/details/amodernnavalcomb1094534899, Lieutenant, Hellenic Navy, Approved for public release; distribution is unlimited.

This thesis is a tutorial for Command, Control, and Communications (C3) students and synthesizes the essence of electronic communications systems and related frequency spectrums into an integrated set of illustrations. The objective is to help the C3 student focus his or her attention on the performed operations and transformations in order to acquires a better understanding for the processes involved. The first major illustration show how the various components of a communication system are related. These components include analog and digital signals, multiplexing, modulation, and various transmission mediums. Central to any communications system is the limitations imposed by bandwidth and noise. The concept of bandwidth is developed through Fourier analysis. An integrated set of graphics shows the relationship between the time and frequency domains and illustrates how the bandwidth increases as the pulse width decreases. Transmitting information often requires higher data rates which, in turn, require higher frequencies. Radio wave propagation is frequency dependent and a chart is developed showing the different categories of radio wave propagation as they relate to atmospheric layers and frequency. Finally, a chart relating transmission medium attenuation, noise sources, and various radio wave terminology is given.

2 v. diagrs. 25 cm., t.I. Transformations géométriques. Perspective. Géométrie infinitésimale. Géométrie réglée. Géométrie cinématique.--t.II. Cinématique appliquée. Stéréotomie. Statique graphique. Calcul graphique. Calcul grapho-mécanique. Nomographie., The University of Michigan Historical Mathematics Collection, (dlps) ACV4870.0002.001, (lccallno) QA445 .O15 c, https://www.lib.umich.edu/about-us/policies/copyright-policy

2 v. diagrs. 25 cm., t.I. Transformations géométriques. Perspective. Géométrie infinitésimale. Géométrie réglée. Géométrie cinématique.--t.II. Cinématique appliquée. Stéréotomie. Statique graphique. Calcul graphique. Calcul grapho-mécanique. Nomographie., The University of Michigan Historical Mathematics Collection, (dlps) ACV4870.0001.001, (lccallno) QA445 .O15 c, https://www.lib.umich.edu/about-us/policies/copyright-policy

xi, 428 p. 340 illus. 26 cm., The University of Michigan Historical Mathematics Collection, (dlps) ABN3254.0001.001, (lccallno) QA501 .O15 c, https://www.lib.umich.edu/about-us/policies/copyright-policy

Relief shown pictorially.; Includes three engraved circles containing lunar and tidal information. An obelisk also serves as the scale cartouche.; No. 12 from Leclerc's 1619 "Théatre du Royaume de France".; From the Composite Atlas of France, title created to represent a unique collection within the Clark Library, University of Michigan., 1 map 34 x 47 cm., a 1050000 W0050800 W0004300 N0485400 N0465000, Scale [ca. 1:1,050,000] (W 5°08'00"-- W 0°43'00"/N 48°54'00"-- N 46°50'00")., http://name.umdl.umich.edu/IC-CLARK1IC-X-003886052%5D39015091193741_01, https://quod.lib.umich.edu/cgi/i/image/api/thumb/clark1ic/003886052/39015091193741_01/!250,250, This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library., https://www.lib.umich.edu/about-us/policies/copyright-policy

Relief shown pictorially.; Includes three engraved circles containing lunar and tidal information. An obelisk also serves as the scale cartouche.; No. 12 from Leclerc's 1619 "Théatre du Royaume de France".; From the Composite Atlas of France, title created to represent a unique collection within the Clark Library, University of Michigan., 1 map 34 x 47 cm., a 1050000 W0050800 W0004300 N0485400 N0465000, Scale [ca. 1:1,050,000] (W 5°08'00"-- W 0°43'00"/N 48°54'00"-- N 46°50'00")., http://name.umdl.umich.edu/IC-CLARK1IC-X-003886052%5D39015091193741_02, https://quod.lib.umich.edu/cgi/i/image/api/thumb/clark1ic/003886052/39015091193741_02/!250,250, This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library., https://www.lib.umich.edu/about-us/policies/copyright-policy

Relief shown pictorially.; Includes three engraved circles containing lunar and tidal information. An obelisk also serves as the scale cartouche.; No. 12 from Leclerc's 1619 "Théatre du Royaume de France".; From the Composite Atlas of France, title created to represent a unique collection within the Clark Library, University of Michigan., 1 map 34 x 47 cm., a 1050000 W0050800 W0004300 N0485400 N0465000, Scale [ca. 1:1,050,000] (W 5°08'00"-- W 0°43'00"/N 48°54'00"-- N 46°50'00")., http://name.umdl.umich.edu/IC-CLARK1IC-X-003886052%5D39015091193741_02, https://quod.lib.umich.edu/cgi/i/image/api/thumb/clark1ic/003886052/39015091193741_02/!250,250, This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library., https://www.lib.umich.edu/about-us/policies/copyright-policy

Relief shown pictorially.; Includes three engraved circles containing lunar and tidal information. An obelisk also serves as the scale cartouche.; No. 12 from Leclerc's 1619 "Théatre du Royaume de France".; From the Composite Atlas of France, title created to represent a unique collection within the Clark Library, University of Michigan., 1 map 34 x 47 cm., a 1050000 W0050800 W0004300 N0485400 N0465000, Scale [ca. 1:1,050,000] (W 5°08'00"-- W 0°43'00"/N 48°54'00"-- N 46°50'00")., http://name.umdl.umich.edu/IC-CLARK1IC-X-003886052%5D39015091193741_01, https://quod.lib.umich.edu/cgi/i/image/api/thumb/clark1ic/003886052/39015091193741_01/!250,250, This map is in the public domain. Please attribute access and use of this digitized map to the Stephen S. Clark Library, University of Michigan Library., https://www.lib.umich.edu/about-us/policies/copyright-policy

[32] p., In verse., Actual printer's name from STC., Signatures: A-D4., Reproduction of the original in the Henry E. Huntington Library and Art Gallery., (marc) 99843844, (stc) STC (2nd ed.) 15097., http://quod.lib.umich.edu/t/text/accesspolicy.html

[16] p., In verse., Signatures: A-B4., Reproduction of the original in the Henry E. Huntington Library and Art Gallery., (marc) 99844946, (stc) STC (2nd ed.) 15096., http://quod.lib.umich.edu/t/text/accesspolicy.html

463 p. plates, ports., plans. 23 cm., Making of America (MOA), (dlps) AFJ7266.0001.001, (lccallno) F 44 .M27 C61, http://quod.lib.umich.edu/t/text/accesspolicy.html

166 p., [1] leaf of plates : 1 port. ; 21 cm. (8vo), Margarot was a delegate of the London Corresponding Society to the British Convention, 1793., Date of publication supplied by Evans., Also issued as the sixth title in: Select pamphlets: viz. 1. The political progress of Britain ... Philadelphia : Mathew Carey, 1796 (Evans 31173)., Frontispiece portrait of Margarot engraved by Benjamin Tanner., (DLPS) N21010.0001.001, (tcp) N21010, http://quod.lib.umich.edu/t/text/accesspolicy.html, To the extent possible under law, the Text Creation Partnership has waived all copyright and related or neighboring rights to this keyboarded and encoded edition of the work described above, according to the terms of the CC0 1.0 Public Domain Dedication (http://creativecommons.org/publicdomain/zero/1.0/). This waiver does not extend to any page images or other supplementary files associated with this work, which may be protected by copyright or other license restrictions. Please go to http://www.textcreationpartnership.org/ for more information.

Editors: Aug. 1859-July 1865, J. D. White, J. H. McQuillen, G. J. Ziegler.--Aug. 1865-Dec. 1871, J. H. McQuillen, G. J. Ziegler.--Jan. 1872-May 1891, J. W. White.--July 1891-Apr. 1930, E. C. Kirk (with L. P. Anthony, Dec. 1917-Apr. 1930).--May 1930-Dec. 1936, L. P. Anthony., Vols. 1-13 are called "new series.", Merged in Jan. 1937 with: Journal of the American Dental Association, ISSN 1048-6364, to form: Journal of the American Dental Association and dental cosmos, ISSN 0375-8451., The Dental cosmos; a monthly record of dental science. [Vol. 68] : Vol 68 : Issue 11, Page(s) 1119, (dlps) volume: 0527912.0068.001, (dlps) article: 0527912.0068.001:643, http://quod.lib.umich.edu/t/text/accesspolicy.html